Sony Electronics recently introduced a trio of personal computers powered by Intel Corp.’s new fourth-generation Core i7 “Haswell” chip. The Japanese company does engineering work on its Vaio computer line in Rancho Bernardo.

Sony bills its Vaio Pro 11 and 13 Ultrabook models as extremely light. They sell for $1,149 and $1,249.

The Vaio Duo 13, a slider hybrid PC, sells for $1,399. The computer can operate as a touchscreen slate or as a conventional laptop.

The computers run on Microsoft’s Windows 8 operating system and incorporate Sony’s display, digital imaging and sound technology.

Sony used to manufacture computers in Rancho Bernardo, but no longer does so.

— Brad Graves